Articles | Volume 24, issue 3
Hydrol. Earth Syst. Sci., 24, 1293–1318, 2020
Hydrol. Earth Syst. Sci., 24, 1293–1318, 2020

Research article 19 Mar 2020

Research article | 19 Mar 2020

Groundwater mean residence times of a subtropical barrier sand island

Harald Hofmann et al.

Related authors

Using radon to understand parafluvial flows and the changing locations of groundwater inflows in the Avon River, southeast Australia
Ian Cartwright and Harald Hofmann
Hydrol. Earth Syst. Sci., 20, 3581–3600,,, 2016
Short summary
Using 14C and 3H to understand groundwater flow and recharge in an aquifer window
A. P. Atkinson, I. Cartwright, B. S. Gilfedder, D. I. Cendón, N. P. Unland, and H. Hofmann
Hydrol. Earth Syst. Sci., 18, 4951–4964,,, 2014
Short summary
Contrasts between estimates of baseflow help discern multiple sources of water contributing to rivers
I. Cartwright, B. Gilfedder, and H. Hofmann
Hydrol. Earth Syst. Sci., 18, 15–30,,, 2014
Investigating the spatio-temporal variability in groundwater and surface water interactions: a multi-technique approach
N. P. Unland, I. Cartwright, M. S. Andersen, G. C. Rau, J. Reed, B. S. Gilfedder, A. P. Atkinson, and H. Hofmann
Hydrol. Earth Syst. Sci., 17, 3437–3453,,, 2013

Related subject area

Subject: Groundwater hydrology | Techniques and Approaches: Modelling approaches
Feedback mechanisms between precipitation and dissolution reactions across randomly heterogeneous conductivity fields
Yaniv Edery, Martin Stolar, Giovanni Porta, and Alberto Guadagnini
Hydrol. Earth Syst. Sci., 25, 5905–5915,,, 2021
Short summary
Taking theory to the field: streamflow generation mechanisms in an intermittent Mediterranean catchment
Karina Y. Gutierrez-Jurado, Daniel Partington, and Margaret Shanafield
Hydrol. Earth Syst. Sci., 25, 4299–4317,,, 2021
Short summary
Coupling saturated and unsaturated flow: comparing the iterative and the non-iterative approach
Natascha Brandhorst, Daniel Erdal, and Insa Neuweiler
Hydrol. Earth Syst. Sci., 25, 4041–4059,,, 2021
Short summary
Time lags of nitrate, chloride, and tritium in streams assessed by dynamic groundwater flow tracking in a lowland landscape
Vince P. Kaandorp, Hans Peter Broers, Ype van der Velde, Joachim Rozemeijer, and Perry G. B. de Louw
Hydrol. Earth Syst. Sci., 25, 3691–3711,,, 2021
Short summary
Using Long Short-Term Memory networks to connect water table depth anomalies to precipitation anomalies over Europe
Yueling Ma, Carsten Montzka, Bagher Bayat, and Stefan Kollet
Hydrol. Earth Syst. Sci., 25, 3555–3575,,, 2021
Short summary

Cited articles

Almendinger, J. E. and Leete, J. H.: Regional and local hydrogeology of calcareous fens in the Minnesota River basin, USA, Wetlands, 18, 184–202, 1998. a
Atkinson, A. P., Cartwright, I., Gilfedder, B. S., Cendón, D. I., Unland, N. P., and Hofmann, H.: Using 14C and 3H to understand groundwater flow and recharge in an aquifer window, Hydrol. Earth System Sciences, 18, 4951–4964,, 2014. a
Audet, P., Gravina, A., Glenn, V., McKenna, P., Vickers, H., Gillespie, M., and Mulligan, D.: Structural development of vegetation on rehabilitated North Stradbroke Island: Above/belowground feedback may facilitate alternative ecological outcomes, Ecol. Process., 2, 2192–1709, 2013. a
Austin, M. J., Masselink, G., McCall, R. T., and Poate, T. G.: Groundwater dynamics in coastal gravel barriers backed by freshwater lagoons and the potential for saline intrusion: Two cases from the UK, J. Mar. Syst., 123–124, 19–32, 2013. a, b
Australian Bureau of Meteorology: Climate Data Online, available at: (last access: January 2019), 2017. a
Short summary
Fresh groundwater (GW) on barrier islands is affected by GW use and precipitation variability. Mean residence times (MRTs) of GW on a sand barrier island were determined. They ranged from 37 years to more than 150 years for tritium and had a much larger range (modern to 5000 years) for carbon-14. Perched aquifer systems in the unsaturated zone and peat formations around wetlands are the most likely cause of longer MRTs, as they have a significant impact on regional recharge and flow diversion.